A man lifts a brick of mass 5 kg from the floor to a shelf 2 meters high.how much work is done?
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Answered by
10
Answer:
98joules
Explanation:
work done is force × displacement
i.e. mass×accelaration×displacement
taking acceleration as gravity=9.8m/s^2,
work done=5kg×9.8m/s^2×2meter
=98joules
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